cold fish:
(plural:’cold fish’ or ‘cold fishes; pronunciation: the letter ‘c’ is said with a ‘k’ sound as in “king”)

a cold fish!
a person who has no emotions or feeling, and deals with others without sympathy, affection or understanding;
a person who is unfriendly with others, usually by nature;
(in slang usage) a partner in sex who is not very active or cooperative,

a cold fish!?
My classmate Hasina is a cold fish; she isn’t friendly with anybody or doesn’t even share her feelings with anyone.
As a businessman you can’t risk being a cold fish however unhappy or sick you are because customers or clients do not understand or care how you personally feel but expect you to be cordial with them.
I hate attending parties where there are many stiff-necked cold fishes who think highly of themselves and show no signs of friendliness when being introduced to others.
